When I collect an egg like that, I usually cook it up right away so that it doesn't sit in the fridge for a long time. Plus, if someone takes it out unknowing of the crack, it may break and fall on the floor or break in the fridge. Then you just have a mess.

I usually cook up the cracked or really dirty eggs for the dogs/chickens. I have a bowl I keep in the fridge just for them until I cook them. If they were clean and just had surface cracks I would have no problem eating them myself.